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Finding the Fourth Proportional to 554,162.72, 830,946 and 287,261.60

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Solution

The fourth proportional to 554,162.72, 830,946 and 287,261.60 is: 430,737.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,162.72 : 830,946 = 287,261.60 : x
  2. Step 2: Convert to fraction form
    554,162.72/830,946 = 287,261.60/x
  3. Step 3: Cross multiply
    554,162.72x = 830,946 × 287,261.60
  4. Step 4: Simplify right side
    554,162.72x = 238,698,877,473.60
  5. Step 5: Solve for x
    x = 238,698,877,473.60/554,162.72
  6. Step 6: Final answer
    x = 430,737.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.